1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d6f3ab9395466dd6f1edbd3f340f6f28f3f0cac6a76f051a19ad654466826. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/367b13d8-6dad-4ee3-bed4-f4ee64b6fdf2.json and https://artists.proofprofile.net/proofs/artist/367b13d8-6dad-4ee3-bed4-f4ee64b6fdf2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014f85ebf9c0c116cbe713c93e92580931884df464179bfa86b707d843ff3f02. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6c4e8ccf97c711ab5b9bf7ff2c90a855d64eef3b8daaa5bbfff7ef483adce1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc025501ab627d0dfe479203027c3d3a8fbadb09e4bf2af61744646cd6c7e868. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939eddab61365ac8f7794fdb41f8322d8ab895ef982d2ff678538dcbd78da2a6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17864693d32efbbf6075ed2a34cbd720372a51d8e62c30c592255c7cd6bde207. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d889de02b863c6b8f4ea3a3799da2385e0f0a38448be875b9bd03ccf3436158. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381de3917f498af799b19949683415fb9721c12118dc04a450a3a1b55ea0977d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc083d96d038b91746bd974dddbec37d9a82b8da1ab502834cb0e8794cc6fc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55f282faa7991faa0a3b60f2831e90451f0be13dce61df31380969cfff40a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894488e93c3c0f671b78ae48be5211a57292b66c7b4125fa5132dac2e383c874. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d569c3d0af500c8d004e57c5e344fef9378bf96a163d8dc86e866433a1b51c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43660d0144c9382c94b27c12e023011a6a1804b8c04187837a018b0a027191f8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba80f16ca3e139d1ec02c3740a2da693b4681f803b2b323b79170d469bca7829. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044284ec60c2e9f7d778d52ed1f18b65290d880425bd667acffe4e968bcc307a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRXM91200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe744524469bb9a0ee2a1da36946a5b398dabb87c3154d5e13be871fb00d12766. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWFM1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c9f81ec8693f1ee2665dbd1b33c42674772c07ede5d34aad3b9b9925e1a38d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWFM1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe6c365267017cb18d5918fc1a8d062e24d9e68c593937712de0062ace37978. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWFM1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ca26fa6846d0f60409405f2a6f49e1df4fbfbaead7b4f08eb3b39c8603b5c8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWFM1400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6702ce4060e42bd4f4d293094951759975beec201c5364af7fe797f558429915. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRRGE1604069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78eb97ee22dcdea171628e87d943eda5504637bdff8e42144b4f1be452ed28a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRRGE1506691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71732d0781c7d1da7ea7cafc3a5db93ec4c9e8d3a0b3f9e202456d2f1d91b0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRRGE1600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd477aa5fd61fba0970326755429810e59900c324175cabadd3eff1ed118afc6. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRRGE1604073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f2608fe01fc8ac2a7c3e29c57af3f235e307f81ea0c885f58dd31842ab7aa0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1871883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dc0c6f05c4d03210932110a0ffa619cdb163607e5c6a82341320cf64e6c0bc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2082801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72e9dda95cc022dad6481a1b5ad709a07c1c5b2366f3e6d7083065e5233c3f9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXKLF1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481ef12f8897b4b9b177d479506369cd1dc6491f48901fd73ce1bce9af827e5d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7GY1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e806aead4f1a5d11537456fa9675c2b5b43c5902f50d02c92c7f825308c0b08. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ32026094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae25d4e679b06335f074fba189aa8684a732f04a4d00e1886bfbb00277b4077e. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2106980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07054d23f01980a1577f21f66377614fd672c853675e5ec54b290635de33e3d1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2106981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afefe8052f51da0e91a10f4bbd8625a5c5e02028194e9ca3f49a0d4dc9f86de. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC91N2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4973370d8b5d96012021af1149283ada77a9d80fad7f8d2e63f566408a7c693. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC91N2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ad693947a265bdcfbde7a888f5c4b47a802e83382354e3d2d3fef017551d2. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC91N2500045.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c35b845e5ffd38635e1702b9bce3ebae4f47918738230d8da03f09833eb6d7c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC91N2500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f986d59d3dd8193eeecaf1ea35d811cf1674cd69ee7dac4c78c1efd76ad1b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC91N2500049.